Furnace.



W. 'S. RALYA.

runmcs; APPLICATION FILED DEC-9, 1915.

3 SHEETSSHEET 1,271,364. Patented July 2,1918.

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APPLICATIQN FILED DEC.9. I915.

PatentdJuly 2, 1918.

3 SHEETS-SHEET 2- w. s. RALYA.

FURNACE.

APPLICATION FILED 056.9. I9I5.

1 ,27 1 ,364. Patented July 2, 1918.

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WILLIAM. s. news, or cmcr'mm'rr, 01110,.nssrcnon 'ro ARTHUR H. nonnsrnn'ean,

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- Specification of Letters Patent.

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A pplication filed December 9, 1915. Serial No. 85,915. Y

ful Improvements in Furnaces, of which the.

following is a specification.

My invention relates to furnaces for 'melting, heating and reh'eating metals, and has for its object the provision of afurnace so arranged as to provide a substantially equal temperature throu bout the heating on melt-.

ing chamber; furt er, to provide such furnace with valves of-novel arrangement for providinga'desired mixture of fluid-fuel and "air for obtaining the desired starting mixers, whereby to increase the air .or oxygen contents of the mixture for producmg combustion at high 'd ees ofheat; and,

further, to so control -t e currents of the products of combustionas to obtain 'substan ,tially, uniform heat throughout the heating chamber and great economy in the consumption of fuel.

The invention will befurther readily understood from'the following description and claims, and from the drawings, in which lat ter:

Figure 1 is an end elevation of my improved device.

,Fig. 2 1s a cross-section of the same taken on the line 22 of Fig. 3.

Fig. 3 is a horizontal plan section taken on the irregular line 33 of Fig. 1.

- Fig. 4 is a horizontal plan section taken on a line corresponding to the line 44 of Fig. 2. i

' Fig. 5 is a vertical section taken on the line 55 of Fig. 1.

Fig. 6 is a detail in section taken on the line 6--6 of Fig. 1, showing the means for securing the ,upright fuel pipes in position.

Fig. 7 is a rear view of the same; and,

Fig. 8 is an enlarged cross-sectional detail of the fuel valve mechanism taken on the line 8-8 of Fig. 3.

11 and 12 represent respectively the front and rear walls of the furnace, and 13 the,

end walls thereof, 14: represents the arched top having an'arched inner face, between which and a horizontal partition 15 the heating chamber-16 is located. The horizontal partition 15forms the floor of the heatingv chamber: Gas mixers are shown at 17 .for

in adjusted positions. independently moved and the valvesinde- 'mixing fluid-fuel, for instance gas, from Patented J uly'2, 1918'. V

is a threaded connection 22 between the regulating disk and the gas-pipe.

The mixers are mounted on slides 26 slidable back and forth in suitable guideways 27 for regulating the distance between the discharging ends of the mixers and the inlet-passages 28 in the front wall of the furnace, for increasing the air-contents of the i mixture. heat and for adjusting the positions of the gether by the flexible joint 32-and connect ed with the pipes 29 and 18 by means of the flexible joints 33, 34. "The guideways 27 form channels in which the slides 26 supporting the mixers are mounted, the slides being'arranged to be movedmanually along the guidewa'ys, the weights of the slides and parts mounted thereon maintaining the same The slides may be pendently regulated or employed, as desired. The inlet-passages 28 are in line with the mixers for receiving the fuel discharged from the latter, the adjustment of the mixers and the distances of the mixers from the outer ends of the passages determining the proportions of air mixed with the fluid- A deflecting wall 36 is provided between the arch of the top and the floor of the heating chamber, and is preferably arranged at an inclination up and down to correspond substantially to the general direction in which the lower end of the fuel-entering side of the arch extends. m The deflecting wall forms a deflecting chamber 37 whichextends preferably throughout the length of the furnace and opens upwardly. The speed of passage of the fluid-fuel is momentarily checked in the deflecting chamthe fuel.

The -fuel strikes the wall 36, which deflects the fuel laterally so as to distribute the same lengthwise of the furnace, and also upwardly to induce a direction of movement along the curvature of the bottom of the upper arched wall 14, as indicated by the arrows in Fig. 2, to downwardly opening passages 40 in the rear of the floor 15 at the respective ends of the furnace, the downwardly opening passages 40 being separated by the floor l5. i

This construction causes the fuel and products of combustion to spread at their points of entrance throughout the length of the heating chamber and to that said chamber is heated equally throughout.

located under-the floor 15 which forms the top of said chamber. Partitions 43 extend forwardly from the rear wall 12 in the lower chamber toward thefront wall 11, between which and the forward ends of said partitions passages 44- are located, the partitions forming end channels 4:5 and a middle channel d6 extending crosswise of the arched top under the floor. The products of combustion pass through the passages 4.0, the end-channelsa ti, the pas- A. lower chamber 42 is sages 44, about the partitions 43, and through.

cables. 54, passing over sheaves 55 journaled on pins 56 suitably secured to the framing, 57 of the furnace. The framing of the furnace is instanced as built up with angle irons suitably bolted or riveted together...

My improved furnace is applicable for melting metal placed in the furnace, for instance, in crucibles on the melting floor;

also for heating metals, for instance for drawing out the tempers of saw-blades and other articles to which it is necessary to ap ply an even temperatur throughout the article, which .is sometimes of considerable superficial area. The extreme range of heat regulation possible by" my improved device is especially useful for purposes ofthis nature and also provides means whereby ex tremely high temperatures may be applied for melting metals quickly.

1811 beginning the firing in my improved furnace, the gas mixers are preferably placed adjacent to the outer ends of the in integral portion 41 of the move upwardly across the arched surface of the top, and at products of combuspassing throughv said opening and flue.

let-passages 28, whereby a limited amount of air is permitted to mix with the fluid-fuel, such as gas or oil. When beginning the firs ing, the regulation of the mixture is preferably obtained through the regulating disk 21, or a slight extent of separation between the ends of the mixers and the outer" ends of the inlet-passages. This relation permits the proper ignition and burning of the mixed fuel in the heating chamber of the furnace.

As the furnace becomes hotter, the mixers are adjusted away from the entering orifices of the inlet-passages,.thereby permitting a greater quantity of air to pass between the ends of the mixers and the inlet-passages, forcausi'ng a mingling of a greater amount of air with the fluid-fuel and a greater intensity of heat in the heating chamber. This vheating, regardless of its intensity is at all times uniform throughout the heating chamber, and the regulation of its intensity permits either an annealing heat or a melting heat to be obtained as may be desired.

My improved device provides great draft of fuel into the heating chamber whereby larger proportions of air are drawn into theheating chamber for providing intense heat and economy of fuel.

Having thus fully described my invention, what I claim as new and desire to se cure by Letters Patent, is:

1. A furnace of the characterdescribed comprising a heating chamber having an arched top and a floor,;a chamber under said floor, partitions dividing said last-named chamber into end channels and a middle at the respective end-portions of said heating chamber between said heating chamber and said end channels respectively, theother ends of said partitions terminating in said second-named chamber, under said floor at points spaced from the basesof said arch to form passages and middle channel at that side of said furnace where said inlets for fluid-fuel are lo cated, said middle channel having an outlet for the products thereof distanced sages.

2. In a fluid-fuel furnace of the character described, a heating chamber provided with an arched to and a floor, inlet passages for mixed fluiduel at one side of said arch, mixers for said fluid-fuel at the outer ends from said last-named paspartitions forming closed between said end channels 1 top, inlets for mixed passages: at the other side of said arch and I of combustion at that end of said inlet passages, means for deflecting said mixed fluid fuel along the curvature of said arch, means for adjustably distancing said mixers from said deflecting means, a chamber under the above mentioned floor provided with partitions dividing said chamber into a plurality of channels, the tops of which are formed by said floor, said channels extending in directions crosswise of the abOXG mentioned arch, one of the ends of a portion of said channels having communication with said heating chamber at the side of said arch opposite the said fluid-fuel inlets, said partitions having closed connections with the walls of said second-named chamber at said last-named side of said second-named chamber, and the other ends of said channels having communication with each other under said arch, the products of combustion having movement in the channels separated by said partitions in opposite directions.

3. A furnace of the character described con'iprising a heating chamber having an arched top and a floor, a chamber under said floor, partitions dividing said last-named chamber into a plurality of channels the tops of which are formed by said floor, said channels extending in directions crosswise of the arch of said top, inlets for mixed fluid-fuel at one side of the arch of said top, said partitions terminating under said arch in rear of said one side of said arch, one of the ends of a portion of said channels having communication with said heating chamber at the side of said arch opposite the said fluid-fuel inlets, and the other ends of said channels having communication around said terminated ends of said partitions with each other, the products of combustion having movement in the chambers separated by said partitions in opposite directions. V l

4. In a furnace of the character described, the combination of a heating chamber comprising an arched top and a floor, a chamber under the floor, partitions of less length than the width of said arch connecting at one of their ends with the walls of said second-named chamber, said partitions dividing said last-named chamber into a plurality of channels the tops of which are formed by said floor, said floor having a deflecting end extending in the general direction of curvature of that portion of the arch adjacent thereto and forming a deflectmg space under the top level of said floor, said deflecting space extending the length of the said heating chamber at the junction of said floor and arch, the said deflecting end of said floor forming a baffle-wall between said arch and floor, inlets for mixed fluidfuel at the base of said arch and opposite said battle-wall, said battle-wall being adapted to deflect said fluid-fuel along the said 4 WILLIAM S. RALYA.

Witnesses:

CHARLES E. WEBER, THERESA M. SILBER. 

